A5044647196- High voltage insulation and dielectric phenomena
- Dielectric materials and actuators
- Lightning and Electromagnetic Phenomena
- Power Transformer Diagnostics and Insulation
- Advanced Sensor and Energy Harvesting Materials
- Electrical Fault Detection and Protection
- VLSI and Analog Circuit Testing
- Aerosol Filtration and Electrostatic Precipitation
- Thermal Analysis in Power Transmission
- Integrated Circuits and Semiconductor Failure Analysis
- Gas Sensing Nanomaterials and Sensors
- Industrial Vision Systems and Defect Detection
- Electrostatic Discharge in Electronics
- Hybrid Renewable Energy Systems
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Embedded Systems and FPGA Design
- Advanced Chemical Sensor Technologies
- Radiation Effects in Electronics
- Low-power high-performance VLSI design
- Advanced Sensor and Control Systems
- Electromagnetic wave absorption materials
- Physics of Superconductivity and Magnetism
- Engineering and Test Systems
- HVDC Systems and Fault Protection
- Polymer Nanocomposite Synthesis and Irradiation
South China Normal University
2024
Shanghai Ocean University
2023
Zhejiang University
2007-2022
Zhejiang University of Science and Technology
2022
China Electric Power Research Institute
2020
North China Electric Power University
2020
Nanjing University of Finance and Economics
2013
Brown University
2010-2011
Zhejiang Province Institute of Architectural Design and Research
2007
Abstract Trace NO 2 detection is essential for the production and life, where sensing strategy appropriate rapid but lacks molecular specificity. This investigation proposes a mechanism dominated by surface-scattering to achieve molecularly-specific detection. Two-dimensional Bi O Se firstly fabricated into Schottky-junction-based gas-sensor. Applied with an alternating excitation, sensor simultaneously outputs multiple response signals (i.e., resistance, reactance, impedance angle). Their...
This paper presents the influence of three different voltage stabilizers, 4-n-propylbenzoic acid, 2-methoxyphenylboronic and 3-aminobenzoylmethylamide, on insulation properties cross-linked polyethylene (XLPE). The 1 wt % stabilizers are blended with XLPE by a solution method, then samples prepared via hot pressing method. Electrical physicochemical blends analyzed space charge, DC resistivity, breakdown strength, thermally stimulated depolarization current, Fourier transform infrared...
This paper reports the performance of an epoxy resin/silicon carbide whisker (EP/SiCw) composite (1–5 wt %) as field-dependent conductivity (FDC) layer for electric field reduction in high-voltage power module. The experiments consist a emission scanning electron microscope (FESEM), thermal conductivity, Fourier transform infrared (FT-IR) spectroscopy, thermally stimulated discharge current (TSDC), space charge, DC and dielectric spectroscopy. spectroscopy are used AC stationary simulations,...
This article investigates the effect of different temperatures (30 °C, 50 and 70 °C) on interfacial electrical insulation properties 500 kV high voltage direct current (HVDC) cross-linked polyethylene (XLPE) cable factory joint having roughness levels. The test samples with (#80, #400, #1000, #2000, #0000) were prepared by surface polishing followed an XLPE injection vulcanization process. At interface, visible microporous defects observed....
Degassing treatment is critical to remove cross-linking by-products in cross-linked polyethylene (XLPE) cable factory joints and prevent early insulation deterioration. In this article, 500-kV high-voltage direct-current (HVDC) joint samples were prepared, the physicochemical temperature-dependent electrical properties of under different degassing times investigated. The results show that prolonged increases crystallinity reduces tensile XLPE samples. without have visible micropores near...
We present a new method to identify multi-site implications that can significantly increase the fault coverage of error-detecting hardware without increasing area overhead. This intelligently divides input space about functions internal circuit sites and finds valuable share gates in checker logic.
Abstract This paper investigates the electrical and thermal properties of pure epoxy resin (EP) its micro–nano hybrid composites (20 wt% micro-AlN fillers with 1 3 nano-Al 2 O fillers; 50% 3% fillers) for power electronic packaging applications. Electrical such as space charge distribution, conductivity surface potential decay are measured. The performance fabricated samples is estimated using analysis devices. composite consisting 20 exhibits least accumulation, higher better stability....
The interface insulation plays a key role in the long-distance high-voltage direct current (HVDC) cables. In this paper, four core–shell ZnO suspensions formed by different alkane coating were prepared for spraying on factory joint interface. chemical, electrical, and simulation studies performed synthesized nanoparticles samples. Results show that alkane-coated exhibits noticeable surface halo thermal weight loss ratio increases with increase of chain. Moreover, sprayed C1-ZnO concentration...
Abstract The effect of adding electron‐buffering voltage stabilizer (1 wt% m‐aminobenzoic acid) on the electrical tree‐induced degradation cross‐linked polyethylene (XLPE) was studied at high temperatures. tree inception, growth, and partial discharge characteristics were simultaneously analyzed 30, 50, 70°C, respectively. results showed that growth rate activity as well repetition rate, significantly increased with temperature for pure XLPE blend. However, blend exhibited higher inception...
Abstract This paper investigated the influence of three aromatic voltage stabilizers (4‐ n ‐propylbenzoic acid, 2‐methoxyphenylboronic and 3‐aminobenzoylmethylamide) on insulating properties cross‐linked polyethylene (XLPE) at high temperatures for direct current (HVDC) applications. The XLPE blends containing 1 wt% were prepared through a solution‐blending method. addition suppressed space charge inside temperatures. DC conductivity its increased with temperature. blended 4‐ acid was lowest...
When testing resources are severely limited, special attention must be paid to critical faults so that important or frequent field failures arising from test escapes can minimized. We present a new algorithm optimize sets considers the criticality of potential undetected defects throughout process and dramatically reduces escapes.
Abstract Epoxy resin (EPR) insulations play a vital role in the insulation of modern power electronic equipment owing to their excellent dielectric properties. However, due high‐power density and miniaturization which causes high heat fluxes under voltage high‐frequency stresses, EPR with good thermal properties is urgently needed. In this study, polydopamine functionalized micro‐BN core‐shell nano TiO 2 –SiO particles are dispersed simultaneously improve It revealed that addition micro‐nano...
Three different contents (1, 3, and 5 wt%) of 4-n-propylbenzoic acid as the voltage stabilizer are added to cross-linked polyethylene (XLPE), whereas electrical, mechanical, thermal properties XLPE/stabilizer blends measured. The obtained results show that addition facilitates a reduction in accumulated space charges conduction current improves life exponent conductivity XLPE but negatively affects degree cross-linking. optimal content attain balanced overall is selected by technique for...
The electric and thermal combined deterioration mechanism of the oil-paper insulation 220 kV current transformer with different aging times is investigated. breakdown strengths time are obtained dwelling times. Furthermore, life exponents under temperatures evaluated by a step-by-step increasing voltage test. Finally, four multi-factor models about remaining life, field, temperature developed. It shown that voltages decrease rapidly increase or time, whereas increases time. exponent more...
Abstract For an integrated energy system (IES) with demand-side response capabilities, both the production of chilled water, hot electricity, and steam can be changed by adjusting output various conversion equipment, products adjusted through management. The change equipment operation demand measures implementation are all need costs. Integrated optimization side such as cold, heat, have potential to reduce total cost IES. To this end, article combines cases establish a mathematical model...
High temperature superconducting (HTS) cable offers the advantages of large transmission capacity, low loss, and environmental friendliness compared to traditional cables. This paper proposes mathematical model cold insulated HTS cable. The inner diameter, winding angle, direction each layer are taken as optimization variables. particle swarm algorithm is used optimize structure dielectric achieve objective uniform current distribution. results show that proportion conductor close, maximum...